Gel sealing device



FIG. 1 is a top, front, and side perspective view of a gel sealing device, showing the new design;

FIG. 2 is a bottom, rear and side perspective view thereof;

FIG. 3 is a top, front, and side perspective view thereof; and,

FIG. 4 is a bottom, rear, and side perspective view thereof.

The broken lines in the drawings depict unclaimed environmental subject matter. 

The ornamental design for a gel sealing device, as shown and described. 